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Gemmological study of the reliquary bust of Saint Lambert from the Liège Cathedral, Belgium
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Gemmological study of the reliquary bust of Saint Lambert from the Liège cathedral, Belgium
Gemmological study of a reliquary cross from the Liège Cathedral, Belgium
Mineralogical study of gold from the Serpont Massif, Belgium
Mineralogical investigation of a Roman enamelled plate from the Liège Cathedral, Belgium